Species: sternbergi BROILI, 1904
Etymology:
Holotype: Alte Akademie, Munich.
Locality: Coffee Creek, Baylor County, Texas.
Horizon: Arroyo Formation, Lower Clear Fork Group.
Biostratigraphy: Land-vertebrate faunachron lower D.
Age: Middle Leonardian stage, upper Rotliegendes, Early Permian.
Material: Skull.
Referred specimens:
A second skull now lost.
BOLT & DEMAR, 1983
Locality: Fort Sill Locality, southwestern Oklahoma.
Horizon:
Biostratigraphy:
Age: Early Permian.
Material:
FM Pr 1108-1130: Dentary.
FM PR 6061: Transverse serial sections of posterior part of right dentary consisting of 9 slides sections cut at 1 mm intervals.
FM 6064: 3 transverse sections through a dentary fragment consisting of 3 slides, cut at various intervals.
KU 55552 to 55554 to 55564: Dentaries and maxillae.
TMM 40882-20839: 1 specimen.
CARROLL & GASKILL, 1978
Locality: Beaver Creek, Wilbarger County, Texas.
Horizon: Arroyo Formation, Lower Clear Fork Group.
Biostratigraphy: Land-vertebrate faunachron lower D.
Age: Middle Leonardian stage, upper Rotliegendes, Early Permian.
Material:
FM-UR 1047: Skull.
OLSON, 1967
Locality: Fort Sill, OMNH Locality V51, Dolese Brothers limestone quarry at Richards Spur, Fissure Fills, just west of U.S. Highways 62 & 281, 10.5 miles south of Apache, 6 miles north of Fort Sill, SW 1/2, Sec. 31, T4N, R11W, Comanche County, Oklahoma.
Horizon: Willington Formation (Garber Formation), Summer Group, Arbuckle limestone, (Probably equivalent to the Arroyo Formation of Texas).
Biostratigraphy:
Age: Middle Leonardian stage, upper Rotliegendes Epoch, Early Permian.
Material:
KU 9929: Scapulocoracoids.
KU 9930: Scapulocoracoid.
KU 9931: Sacral rib.
KU 9932: Sacral rib.
KU 9933: Pelvis.
KU 9934: Pelvis.
YPM 3681-3684, 3700, 3702, 3704: Lower jaws.
YPM 3689: Skull.
YPM 3805-3812: Humeri.
YPM 3813-3816: Tibiae.
YPM 3818: Ulna.
YPM 3819-3824: Vertebrae.
YPM 3826-3829: Fibulae.
YPM 3830-3833: Femora.
YPM 3834-3837: Radii.
YPM 3844, 3868: Scapulocoracoids.
YPM 3846, 3850: Pubes.
ZIDEK, JOHNSON, MAY & CLABORN, 2004
Locality: OMNH V 173, Northeast Frederic site of Simpson, (1976, 1979), Tillman County, Oklahoma.
Horizon: Garber Sandstone, Upper part of the Sumner Group, possibly equivalent to the Lower Arroyo Formation, Lower Clear Fork Group.
Biostratigraphy: Land-vertebrate faunachron lower D.
Age: Middle Leonardian stage, upper Rotliegendes, Early Permian.
Material:
Number: Not given:
Locality: OMNH V 247, found near Lake Frederick site, Tillman County, Oklahoma.Horizon: Garber Sandstone, Upper part of the Sumner Group, possibly equivalent to the Lower Arroyo Formation, Lower Clear Fork Group.
Biostratigraphy: Land-vertebrate faunachron lower D.
Age: Middle Leonardian stage, upper Rotliegendes, Early Permian.
Material:
Number: Not given:
= Cardiocephalus cf sternbergi DALY, 1973
Locality: South Grandfield, southern Tillman County, Oklahoma.
Horizon: Hennessey Formation, (Arroyo equivalent), Low Clear Fork Group.
Biostratigraphy:
Age: Leonardian Stage, Lower Rotliegendes Epoch, Early Permian.
Material:
FM UR 2296: Skull and jaw.
FM UR 2297: Fragmentary skull.
FM UR 2387: A partial mandible.
FM UR 2299-2302: Fragmentary skeletons.
= Gymnarthrus willoughbyi CASE, 1910
Etymology:Holotype: AMNH 4892
Locality: Baylor County, near the head of Coffee Creek, Texas.
Horizon: A red clay above the Wichita Conglomerate.
Biostratigraphy:
Age: Early Permian.
Material: Skull.
Paratype:
AMNH 4763
Locality: Unknown, Texas.
Horizon:
Biostratigraphy:
Age: Early Permian.
Material: Skull.
_____________________________________________________________________________________
Species: peabodyi (GREGORY, PEABODY & PRICE, 1956)
Etymology:
= Cardiocephalus cf. sternbergi GREGORY, PEABODY & PRICE, 1956
= Euryodus peabodyi (GREGORY, PEABODY & PRICE, 1956) DALY, 1973
Holotype: OUSM 10001 (OU 1034 of GREGORY, PEABODY & PRICE 1956)
Locality: Fort Sill, OMNH Locality V51, Dolese Brothers limestone quarry at Richards Spur, Fissure Fills, just west of U.S. Highways 62 & 281, 10.5 miles south of Apache, 6 miles north of Fort Sill, SW 1/2, Sec. 31, T4N, R11W, Comanche County, Oklahoma.
Horizon: Willington Formation (Garber Formation), Summer Group, Arbuckle limestone, (Probably equivalent to the Arroyo Formation of Texas).
Biostratigraphy:
Age: Middle Leonardian stage, upper Rotliegendes Epoch, Early Permian.
Material: Skull and almost complete skeleton lacking only the right forelimb, and the real limbs and tail.
Referred material:
YPM 3689: Skull and fragmentary skeleton.
KUVP 8967: Nearly complete skull and jaws.
AMNH 2470: Palatine.
AMNH 2471: Maxilla.
MCZ 4352: Dentary.
MCZ 3692: Humerus.
MCZ 3693: Tibia.
YPM 5834: Pelvic girdle.